共查询到20条相似文献，搜索用时 31 毫秒
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随着智能化研究成为当今科技发展的热点,结合智能优化算法的浮体系泊系统自动化设计成为一个将现代方法应用于传统工程领域并提高设计效率的研究对象。针对浮体的系泊系统,以悬链线式系泊方式为研究对象,分析得出了系泊缆与不同选材参数之间的规律,建立系泊系统自动化设计方法,选用遗传算法作为算法基础,实现方案的智能优选,进行了有效的探索研究;开发了系泊系统自动化设计的自主程序,完成了典型的单根系泊缆的单点系泊系统以及多段组成风分布式系泊系统的研究,验证了方法的可行性,为系泊系统的自动化设计这一技术问题提供了解决方法与工程的应用手段。 相似文献
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工业产品设计方案的模糊综合评价方法 总被引：1，自引：0，他引：1
本文根据工业产品的特点，建立了工业产品设计方案评价指标体系──－多级多指标评价体系，且具有模糊的特点．通过引入模糊优选理论，提出了设计方案模糊综合评价方法，并将其应用于除湿机的设计方案评价和选优． 相似文献
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Soon-Sup Lee Jong-Kap Lee Beom-Jin Park Dong-Kon Lee Soo-Young Kim Kyung-Ho Lee 《Ocean Engineering》2006,33(13):1814-1828
In this paper, internet-based ship technical information management system has been developed as a means to accumulate, manage, share and utilize various distributed applications and information used for ship design and building. The information managed in the system is documents from the whole life cycle including concept design, basic design, detailed design, construction, operation and maintenance. In addition, using the developed system, integrated system framework is also proposed to integrate applications and database in concurrent engineering environment. 相似文献
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Implementation of an expert system for the design of single-point, subsurface oceanographic moorings
The design of single-point, subsurface moorings is carried out a present by a design engineer with the help of some computer programs. These computer programs are used for analyzing the mooring, but the setting-up of the initial mooring configuration and the subsequent modifications on the basis of the results of the analysis are carried out by the design engineer.An expert system for mooring design is developed to eliminate the human expert from the design process and thus to enable a novice to design a mooring by himself. Using the expert system, an optimum least-weight in air design can be developed in much less time than is usually required in conventional procedures. Perhaps the most significant advantage is that the system can serve as a vehicle for effective transfer of present day expertise for future applications.The system is developed and implemented on an IBM PC/AT. It has a user-friendly, interactive, menu-driven input procedure and a sophisticated output facility. The design process is totally automated and the requirement to consult a human expert is easily eliminated. The system has tremendous flexibility and a knowledge engineer can easily adapt it to the specific requirements of a particular user. The concept of machine learning is introduced by recording the failure data and using this information in the later decision-making processes. A CAD package, AUTOCAD, is used to generate the drawings and an interface is developed between the CAD package and the expert system so that the former is transparent to the user. 相似文献
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J. Vasconcellos 《Ocean Engineering》1999,26(9):865
This paper describes a methodology developed for the preliminary design of floating production platforms. The preliminary design approach interlinks the mathematical design model with global optimization techniques. To illustrate the design procedure, the initial intermediate and final results are presented. They provide a clear understanding of the mathematical model and the decision support system. The preliminary design approach described here is based on the commercial software which is interfaced to what is called the FPS system and linked to a SEARCH package for design solutions. The paper summarizes the preliminary design approach, the mathematical model optimization and presents semisubmersible and TLP platform examples. 相似文献
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系泊系统是半潜式支持平台抵抗恶劣海洋环境作用、限制平台偏移、实现海上定位的重要设备，辐射状多点系泊是常用的布置方式。针对该平台系泊系统开展了设计方法和分析流程研究，阐述了系泊系统配置设计，包括系泊缆的数量、抛出长度、单根系泊缆的刚度、直径、破断负荷、定位锚的型式、最大抓力等；系泊系统的布置设计，包括系泊缆之间的水平夹角、系泊绞车、导缆器、定位锚的位置等；同时归纳风载荷、流载荷以及波浪慢漂载荷的常用估算方法；总结适用于该类平台系泊系统设计的规范要求。将上述方法和流程应用于某型半潜式支持平台系泊系统的开发和设计，采用系泊定位分析程序MIMOSA对该系统的定位能力进行分析，研究了系泊缆形状、夹角等参数随张力的变化特征，同时系泊缆按照船级社的规范要求进行衡准，反复调整和优化系泊系统的配置和布置方式，直至系泊系统满足要求，最终设计出较合适的系泊系统。相关方法、流程和结论为实际工程项目提供重要的设计思路。 相似文献
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水声数字通信系统的仿真 总被引：1，自引：0，他引：1
本文介绍了利用计算机仿真水声数字通信系统。介绍了数字通信系统的组成部分之后，重点介绍水声信道的仿真以及调制方法的选取，通过计算机的仿真提高了水声通信系统设计的有效性，对实际出海实验很有帮助。 相似文献
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We propose a basic ship design knowledge-model for information storage and retrieval using a knowledge-based engineering (KBE) system and develop a semantic inquiry function that allows users to use the retrieved information immediately. Our aim is to merge the repetitive access and calculating tasks and data such as the principal dimensions required during the basic ship design process into a single database, so that this information remains available for future construction projects. However, the concept of linking a design knowledge base and inference engine requires the combining of ship design information with the KBE system. This research enhances the flexibility, extension, and operation of the inference mechanism of the KBE design methodology through the establishment of a user interface, knowledge base, and inference engine. The design information is managed a document-based approach, which requires the conversion of the original documents into the XML (eXtensible Markup Language) format, and compiles rules for the basic design process. This system uses the KBE method attempts to reduce the double workload of design and modeling at the commencement of a new project with the document-generating integration work. 相似文献
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The model test method of the FPSO and offloading system is investigated by using the development mode of “FPSO + CALM + TANKER” working in a 1700-m depth of offshore West Africa. An equivalent design based on static and dynamic similarity criteria for oil offloading line (OOL) is discussed, and a type of creative method for the equivalent design of OOL in a model test is proposed. Based on the static similarity criterion, the truncated design of the FPSO mooring system in water depth and horizontal directions is carried out. After that, a relevant static optimization is conducted. Meanwhile, to avoid interference between the FPSO mooring system and CALM mooring system, a horizontal equivalent design for the CALM mooring system is provided. On this basis, the model test scheme is conducted. Time domain coupled analyses for the whole system before and after truncation are later performed. After comparison, it is observed that the calculated results of the truncated system are basically consistent with those of the prototype system, and the design of the model test scheme is demonstrated to be robust and reliable. 相似文献
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台风暴潮数值预报业务系统的开发与研究 总被引：1，自引：0，他引：1
介绍了台风暴潮预报业务系统的总体设计，台风暴潮数值预报的原理，系统的详细设计，系统的开发工具，特点以及系统的误差分析等。系统使用情况表明，该系统具有运行速度快，精度高，可操作性强等特点，对沿海地区防灾，减灾具有重要意义。 相似文献
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为实现海水中有机磷浓度现场监测,采用由单片机和工控机组成的海水有机磷农药实时数据采集系统的设计.给出了由PIC单片机构成的采集控制模块硬件设计原理和软件设计方法,工控机的程序流程和浓度的算法. 相似文献
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Wenping Gong Hongwei Huang C. Hsein Juang Lei Wang 《Marine Georesources & Geotechnology》2017,35(2):157-169
The shoring system that consists of soldier piles and anchor tiebacks is often used in deep excavations in sandy deposits. However, uncertainties often exist in the design of such shoring systems. In this article, a simplified-robust geotechnical design method is proposed to account for these uncertainties in the shoring system design. Specifically, for a given deep excavation, uncertain soil parameters and surcharges are treated as noise factors, and the parameters of soldier piles and tieback anchors are treated as design parameters. Robust design is then implemented as a multiobjective optimization problem, in which the design robustness is sought along with cost efficiency and safety requirements. A trade-off between design robustness and cost efficiency exists and the optimization usually leads to a Pareto front. By applying the knee point concept, the most preferred design that meets the safety requirements and yields the best compromise between design robustness and cost efficiency can be identified on the Pareto front. Improvements made to the existing robust geotechnical design method include an efficient formulation of the design robustness and a new procedure for finding the most preferred design in the design pool. The new simplified-robust geotechnical design method is illustrated with a real-world excavation case study. 相似文献
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近年来,国内兴起了大力发展半潜式起重平台的势头,系泊系统的设计与优化是该类型平台开发中的关键问题之一。采用时域方法对半潜式起重平台系泊系统进行耦合动力分析,研究系泊系统主要参数对其动力响应特性的影响,并给出主要参数的设计优化流程,在此基础上,以能够满足安全校核且性能较优的系泊方案为目标,对该半潜式起重平台的系泊系统进行优化设计,并研究单根系泊缆发生破断对整个系泊系统的影响。结果表明:基于主要参数对系泊性能的影响规律,经优化设计得到的系泊方案,预留的安全欲度适中,能够保障半潜式起重平台在恶劣海况下的生存能力,同时具备较好的经济性。 相似文献
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The concrete-steel platform structure is rather complicated because it involves such materials as concrete, reinforcing bars, steel, and so on. K the traditional dimension optimization method is employed, the optimal design of the platform will meet many handicaps, even it cannot be implemented at all. The multilevel optimal design approach is an efficient tool for the solution of large-scale engineering structures. In this paper, this approach is applied to the optimal design of a concrete-steel platform, which is formulated as a system level optimal design problem and a set of uncoupled substructure level optimal design problems. The process of optimization is a process of iteration between system level and substructure level until the objective function converges. An illustrative example indicates that this method is effective in the optimal design of concrete-steel platforms. 相似文献
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针对“透明海洋”工程对水下实时、长期、连续观测的迫切需求,开展基于水下绞车的实时传输潜标研制。该型潜标采用水下绞车牵引卫星通信浮标的方式,将潜标上搭载的测量仪器观测数据通过铠装通信缆传输到卫星通信浮标,当卫星通信浮标浮出水面时,再通过卫星通信传输至数据接收处理装置,完成数据传输后,水下绞车牵引卫星通信浮标至海面以下50 m,从而实现潜标系统的实时传输功能。本文详细介绍了基于水下绞车的实时传输潜标系统设计及关键组部件设计,并通过海上试验验证了该型潜标海上应用的可行性。 相似文献